CN112846376A

CN112846376A - Accurate multi-angle multi-diameter burr-free pipe cutting machine

Info

Publication number: CN112846376A
Application number: CN202110192959.XA
Authority: CN
Inventors: 侯明燕
Original assignee: Shenzhen Dongdayue Technology Co ltd
Current assignee: Shenzhen Dongdayue Technology Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of pipe cutting machines, in particular to a precise multi-angle multi-diameter burr-free pipe cutting machine. The invention provides a precise multi-angle multi-diameter burr-free pipe cutting machine, which aims to solve the problems that the existing pipe cutting machine aims at multi-angle shearing and high-precision processing of steel pipes with different sizes and the traditional burr shearing is also solved. The invention discloses a precise multi-angle multi-diameter burr-free pipe cutting machine which comprises a box body (11) and a motor main shaft (26) arranged on the box body (11) and connected in a rotating mode, wherein a stirring rotating shaft (34) is fixedly connected onto the motor main shaft (26), a large turntable (14) is fixedly connected onto the stirring rotating shaft (34), protective sliding mechanisms used for preventing a device from deviating are further arranged on two sides of the large turntable (14), and a positioning device used for preventing a steel pipe from deviating during shearing is further arranged on the large turntable (14).

Description

Accurate multi-angle multi-diameter burr-free pipe cutting machine

Technical Field

The invention relates to the technical field of pipe cutting machines, in particular to a precise multi-angle multi-diameter burr-free pipe cutting machine.

Background

Present pipe cutting machine's machining precision is lower, there are more problems, that is difficult to satisfy the requirement to the ordinary pipe cutting machine of the higher work piece of the cutting angle required precision of steel pipe, wherein have very big some reason then to do, thereby the design defect of ordinary pipe cutting machine leads to the device to be difficult to accurate location to the steel pipe device, the reason that can not accurate location then is because most pipe cutting machine is artifical to its location, because everyone's operating technique is different, and then the precision of the work piece that processing came out then has changed, thereby lead to being difficult to guarantee the cutting surface of unified high accuracy, and some pipe cutting machines are owing to the grinding apparatus cutting, can remain burr mouthful in the cutting mouth department of steel pipe, directly influenced processingquality.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a precise multi-angle multi-diameter burr-free pipe cutting machine, which aims to solve the problems that the existing pipe cutting machine equipment can cut steel pipes with different sizes at multiple angles and process the steel pipes with high precision and also can process the traditional cut burrs. The technical scheme of the invention is that the precise multi-angle multi-diameter burr-free pipe cutting machine is adopted.

The precise multi-angle multi-diameter burr-free pipe cutting machine manufactured by the technical scheme of the invention comprises a box body and a motor main shaft which is arranged on the box body and is in rotating connection with the box body, wherein a stirring rotating shaft is fixedly connected onto the motor main shaft, a large rotating disc is fixedly connected onto the stirring rotating shaft, protective sliding mechanisms for preventing the device from deviating are arranged on two sides of the large rotating disc, a positioning device for preventing the steel pipe from deviating during shearing is also arranged on the large rotating disc, a shearing cavity is arranged in the box body, a transmission element which is arranged in the shearing cavity is fixedly connected onto the box body, a precise device for regulating and controlling the device to precisely shear the steel pipe is arranged on the transmission element, a motor cavity is arranged in the box body, a rotating device for regulating and controlling a precise angle is arranged in the motor cavity, two cutter shells which are distributed on two sides of the stirring rotating shaft are fixedly connected onto the, be equipped with the accurate annular shearing mechanism who cuts the steel pipe in the cutter shell, annular shearing mechanism include with the hydraulic press chamber that is equipped with in the cutter shell be equipped with the control mechanism who is used for controlling means to realize the equal accurate processing in both sides shearing the steel pipe in the hydraulic press intracavity, fixedly connected with second hydraulic press on the hydraulic press intracavity wall, fixedly connected with second pressure sensitive component on the second hydraulic press, sliding connection has the driven push rod of pressing on the cutter shell, thereby through the driven push rod of pressing to the second pressure sensitive component press and then start-up of two second hydraulic presses simultaneously drive annular cutter and draw close each other to realize cutting the steel pipe, because the cutter of the device is the design of annular inside extrusion shearing, the effectual burr condition that has reduced the shearing department of steel pipe.

The hydraulic steel pipe clamping device is characterized in that a driving hydraulic transmission shaft is condensed on the large rotary table in a sliding mode, an arc-shaped tray is fixedly connected to the driving hydraulic transmission shaft, clamping push pins are arranged on two sides of the driving hydraulic transmission shaft and are connected with the large rotary table in a sliding mode, four positioning blocks are symmetrically distributed on the large rotary table in a fixed connection mode relative to the center of the driving hydraulic transmission shaft, the driving hydraulic transmission shaft fixedly connected to the upper surface of the arc-shaped tray is driven to move downwards together through a steel pipe and placed on the arc-shaped tray under the action of gravity, the clamping push pins are driven to move upwards under the action of hydraulic transmission, a sensing device of a hydraulic machine on the positioning blocks is pressed through the clamping push pins, and then the first hydraulic machine is.

The positioning block is connected with a clamping slide rod in a sliding manner, the clamping slide rod is fixedly connected with an annular clamping plate, the positioning block is fixedly connected with a first hydraulic machine, the first hydraulic machine is connected with a first pressure-sensitive element in a fixed manner, first hydraulic oil is arranged in the rotary table, the rotary table is connected with a first hydraulic push plate in a sliding manner, the first hydraulic push plate is connected with the first hydraulic oil in a contact manner, the first hydraulic push plate is connected with the clamping push pin in a fixed manner, the clamping push pin can be connected with the first pressure-sensitive element in a contact manner, an active hydraulic ring disc is fixedly connected to the active hydraulic transmission shaft and is connected with the first hydraulic oil in a contact manner, a second spring is arranged between the arc-shaped tray and the rotary table, the active hydraulic transmission shaft is fixedly connected with the active hydraulic ring disc, and the arc-shaped tray is pressed through, the clamping push pin is driven to move upwards under the action of hydraulic transmission, then the clamping push pin presses the first pressure-sensitive element to start the first hydraulic machine, and the first hydraulic machine drives the annular clamping plate, so that the steel pipe on the additional device is accurately positioned.

Accurate device include with fixed connection's scale is pressed the piece on the transmission element, fixedly connected with infrared sensory element is pressed on the scale is pressed the piece, sliding connection has transmission element on the box, sliding connection has executive component on the transmission element, the carousel is close to one side that the scale was pressed the piece and is equipped with the calibrated scale, be equipped with the motor chamber in the box, fixedly connected with main motor on the motor intracavity wall, main motor with the motor spindle rotates to be connected, main motor with executive component fixed connection, through the calibrated scale with the signal transmission that will accept is responded to between the infrared sensory element for executive component, through the rotation of executive component control main motor is advanced and is realized accurate control cutting angle.

The rotating device comprises a supporting sliding rod which is connected with the box body in a sliding mode, a stable outer ring is fixedly connected to the large rotary table, a buffering sliding groove is formed in the box body, the buffering sliding groove is connected with the supporting sliding rod in a sliding mode, a rotary wheel shell is fixedly connected to the supporting sliding rod in a rotating mode, a rotary wheel pin is connected to the rotary wheel shell in a rotating mode, a rotary wheel is fixedly connected to the rotary wheel pin, the rotary wheel is in contact connection with the stable outer ring, a first spring is arranged between the rotary wheel shell and the box body, and the upward force of the rotary wheel shell is supported through the elastic force of the first spring and placed to enable the stable outer ring to rotate obviously.

The annular shearing device comprises a braking push rod sliding on the box body, a braking button is fixedly connected to the braking push rod, a cutter groove is formed in the cutter shell, a shearing cutter is connected in the cutter groove in a sliding mode, a third spring is arranged between the braking push rod and the box body, the effect that the pressing device can reset at every time is achieved through the elastic force of the third spring, second hydraulic oil is arranged in the cutter shell, a push rod ring disc is connected in the cutter shell in a sliding mode, the push rod ring disc is fixedly connected with the driven pressing push rod, the braking push rod is in contact with the second hydraulic oil, and the push rod ring disc is in contact with the second hydraulic oil.

The driven pressing push rod can be in contact connection with the second pressure-sensitive element, the second hydraulic machines are in contact connection with the second pressure-sensitive element, the second hydraulic push rod is connected to the second hydraulic machines in a sliding mode, the second pressure-sensitive element is pressed through the driven pressing push rod, the two second hydraulic machines are controlled to be started simultaneously, the second hydraulic push rod is fixedly connected with the shearing knives, the brake button is effectively pressed manually, the driven pressing push rod is driven to move downwards through hydraulic transmission, the second hydraulic machines are controlled by the second pressure-sensitive element to be started together, and the two shearing knives are driven by the second hydraulic push rod to be close to the steel pipe together to effectively achieve burr-free shearing of the steel pipe.

By adopting the technical scheme, the invention has the following beneficial effects:

the steel pipe clamping in the device has adopted automatic two-way location clamping, the effectual machining error who avoids artifical clamping to great improvement accurate effect, and still adopt the motor to rotate the effectual cutting angle deviation that brings of manual positioning who avoids of angle modulation cutting in the device, and the device is interior still has one big advantage that the device cutting adopts is the cutting of annular extrusion, the effectual burr of avoiding the device steel pipe notch play in the cutting influences the processingquality of work piece, the clamp of device is pressed from both sides tightly and the angle modulation is also sheared and has agreed to adopt mechanical rotation, the machining error that the effectual manual operation of avoiding brought.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a precision multi-angle multi-diameter burr-free pipe cutting machine according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in the direction "A-A";

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is an enlarged partial schematic view of FIG. 2 at "C";

FIG. 5 is a partial enlarged view of FIG. 2 at "D

Fig. 6 is a schematic view of the effect of the pipe cutting process.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 6, a precise multi-angle multi-diameter burr-free pipe cutting machine comprises a box body 11 and a motor spindle 26 rotatably connected to the box body 11, wherein a toggle spindle 34 is fixedly connected to the motor spindle 26, a large rotary table 14 is fixedly connected to the toggle spindle 34, protective sliding mechanisms for preventing the device from deviating are further arranged on two sides of the large rotary table 14, a positioning device 903 for preventing the steel pipe from deviating during shearing is further arranged on the large rotary table 14, a shearing cavity 12 is arranged in the box body 11, a transmission element 27 which is fixedly connected to the box body 11 and is arranged in the shearing cavity 12 is arranged on the box body 11, a precise device 901 for regulating and controlling the device to precisely shear the steel pipe is arranged on the transmission element 27, a motor cavity 23 is arranged in the box body 11, and a rotating device 902 for regulating and controlling the precise angle by the toggle device is arranged in the motor cavity 23, the box body 11 is fixedly connected with two cutter shells 60 distributed on two sides of the toggle rotating shaft 34, an annular shearing device 904 for accurately shearing steel pipes is arranged in each cutter shell 60, each annular shearing device 904 comprises a hydraulic machine cavity 47 arranged in each cutter shell 60, a control mechanism used for controlling the device to realize equal and accurate machining of two sides of each steel pipe in the shearing process is arranged in each hydraulic machine cavity 47, a second hydraulic machine 50 is fixedly connected to the inner wall of each hydraulic machine cavity 47, a second pressure sensitive element 57 is fixedly connected to each second hydraulic machine 50, a driven pressing push rod 58 is slidably connected to each cutter shell 60, the second pressure sensitive elements 57 are pressed by the driven pressing push rods 58, the two second hydraulic machines 50 are started simultaneously, and accordingly the annular cutters are driven to approach each other, and the steel pipes are sheared due to the fact that the cutters of the device are designed to be annularly and inwardly extruded, the burr condition of the shearing department of steel pipe has effectually been reduced.

As shown in fig. 1 to 5, the large turntable 14 slides thereon to be condensed with a driving hydraulic transmission shaft 62, the driving hydraulic transmission shaft 62 is fixedly connected with an arc-shaped tray 43, the two sides of the driving hydraulic transmission shaft 62 are provided with clamping push pins 37, the clamping push pin 37 is connected with the large rotary table 14 in a sliding way, four positioning blocks 16 are fixedly connected to the large rotary table 14 and are symmetrically distributed on the center of the driving hydraulic transmission shaft 62, the four positioning blocks are placed on the arc-shaped tray 43 through steel pipes, the driving hydraulic transmission shaft 62 fixedly connected with the upper surface of the arc-shaped tray 43 is driven to move downwards together under the action of gravity, and then the clamping push pin 37 is driven to move upwards under the action of hydraulic transmission, the sensing device of the hydraulic press is pressed onto the positioning block 16 through the clamping push pin 37, so that the first hydraulic press 17 is started to clamp the steel pipe through the clamping device.

Referring to fig. 1 to 5, a clamping slide bar 18 is slidably connected to a positioning block 16, an annular clamping plate 15 is fixedly connected to the clamping slide bar 18, a first hydraulic press 17 is fixedly connected to the positioning block 16, a first pressure-sensitive element 42 is fixedly connected to the first hydraulic press 17, a first hydraulic oil 40 is arranged in a large rotary table 14, a first hydraulic push plate 38 is slidably connected to the large rotary table 14, the first hydraulic push plate 38 is in contact connection with the first hydraulic oil 40, the first hydraulic push plate 38 is fixedly connected to the clamping push pin 37, the clamping push pin 37 can be in contact connection with the first pressure-sensitive element 42, an active hydraulic ring plate 45 is fixedly connected to an active hydraulic transmission shaft 62, the active hydraulic ring plate 45 is in contact connection with the first hydraulic oil 40, and a second spring 44 is arranged between the arc-shaped tray 43 and the large rotary table 14, the driving hydraulic transmission shaft 62 is fixedly connected with the driving hydraulic ring disc 45, the arc-shaped tray 43 is pressed through a steel pipe, the clamping push pin 37 is driven to move upwards under the action of hydraulic transmission, the clamping push pin 37 presses the first pressure-sensitive element 42 to start the first hydraulic machine 17, and the first hydraulic machine 17 drives the annular clamp plate 15 to accurately position the steel pipe on the additional device.

Referring to fig. 1 to 2, the precision apparatus 901 includes a scale pressing block 20 fixedly connected to the transmission element 27, the scale pressing block 20 is fixedly connected with an infrared sensing element 21, the box body 11 is slidably connected with a transmission element 27, an actuating element 24 is connected on the transmission element 27 in a sliding way, a dial 22 is arranged on one side of the large rotary disc 14 close to the scale pressing block 20, a motor cavity 23 is arranged in the box body 11, a main motor 25 is fixedly connected on the inner wall of the motor cavity 23, the main motor 25 is rotatably connected with the motor spindle 26, the main motor 25 is fixedly connected with the actuating element 24, the received signal is transmitted to the actuator 24 by the induction between the scale plate 22 and the infrared sensor 21, the actuator 24 controls the rotation of the main motor 25 to precisely control the cutting angle.

Referring to fig. 2, the rotating device 902 includes a supporting slide rod 29 slidably connected to the box 11, a stationary outer ring 13 fixedly connected to the turntable 14, a buffering slide groove 28 disposed in the box 11, the buffering slide groove 28 slidably connected to the supporting slide rod 29, a rotating wheel housing 31 fixedly connected to the supporting slide rod 29, a rotating wheel pin 32 rotatably connected to the rotating wheel housing 31, a rotating wheel 33 fixedly connected to the rotating wheel pin 32, the rotating wheel 33 contacting the stationary outer ring 13, a first spring 30 disposed between the rotating wheel housing 31 and the box 11, and supported by an elastic force of the first spring 30, an upward force of the rotating wheel housing 31 to place the stationary outer ring 13 to rotate with a relatively obvious offset.

Referring to fig. 1 and 3, the annular shearing device 904 includes a brake push rod 55 sliding on the box 11, a brake button 53 is fixedly connected to the brake push rod 55, a cutter groove 46 is formed in the cutter housing 60, a shearing knife 52 is slidably connected to the cutter groove 46, a third spring 54 is arranged between the brake button 53 and the box 11, the effect that the pressing device can reset each time is achieved through the elasticity of the third spring 54, second hydraulic oil 56 is arranged in the cutter housing 60, a push rod ring disc 59 is slidably connected to the cutter housing 60, the push rod ring disc 59 is fixedly connected to the driven pressing push rod 58, the brake push rod 55 is in contact connection with the second hydraulic oil 56, and the push rod ring disc 59 is in contact connection with the second hydraulic oil 56.

Referring to fig. 1 and 3, the driven pressing push rod 58 can be in contact connection with the second pressure-sensitive element 57, the second hydraulic machines 50 are connected with the second hydraulic push rod 49 in a sliding manner, the driven pressing push rod 58 presses the second pressure-sensitive element 57 to control the two second hydraulic machines 50 to be started simultaneously, the second hydraulic push rods 49 are fixedly connected with the shearing knives 52, the brake button 53 is effectively pressed manually, the driven pressing push rod 58 is driven to move downwards through hydraulic transmission, the second pressure-sensitive element 57 controls the second hydraulic machines 50 to be started together, and the second hydraulic push rod 49 drives the two shearing knives 52 to be close to the steel pipe together to effectively realize burr-free shearing of the steel pipe.

The working principle is as follows:

initially, the infrared sensor 21 is pointed at the midpoint of the scale 22, the arcuate tray 43 is uppermost in the sliding position, the shear blade 52 is within the device cutter housing 60, and the wheel 33 and the stationary outer ring 13 are in contact.

When the steel pipe cutting machine works, a steel pipe to be cut is placed on the arc-shaped tray 43, the driving hydraulic transmission shaft 62 fixedly connected to the upper surface of the arc-shaped tray 43 is driven to move downwards under the action of gravity, the first hydraulic oil 40 is pressed through the driving hydraulic ring disc 45 fixedly connected to the upper surface of the driving hydraulic transmission shaft 62, so that the clamping push pin 37 is pushed to move upwards through the first hydraulic oil 40, the clamping push pin 37 is pressed to the first pressure-sensitive element 42 to control the starting of the first hydraulic machine 17, the clamping slide rod 18 is driven to move through the starting of the first hydraulic machine 17, the steel pipe is clamped through the ring-shaped clamping plate 15, the automatic clamping is effectively realized, the machining error caused by manual clamping is prevented, when a specific inclination angle is required for the steel pipe cutting, only the scale pressing block 20 needs to be pressed, the transmission element 27 fixed on the scale pressing block 20 is driven to move downwards through the downward movement of the, the actuator 24 receives a pressure signal and controls the start of the main motor 25 to drive the motor spindle 26 to rotate, the toggle rotating shaft 34 fixedly connected with the motor spindle 26 and the large rotary disc 14 fixedly connected with the toggle rotating shaft 34 rotate together, when the main motor 25 rotates to a required cutting angle, the scale pressing block 20 is not pressed any more, so that the main motor 25 stops rotating, the cutting angle is effectively and accurately controlled, after the cutting process is ready, only the brake button 53 needs to be pressed, the brake push rod 55 fixedly connected with the brake button 53 moves together, the push rod ring disc 59 and the driven press push rod 58 fixedly connected with the push rod ring disc 59 move downwards together through hydraulic transmission, so that the driven press push rod 58 presses the second pressure-sensitive element 57 to start the two second hydraulic presses 50, and then the cutters 52 fixedly connected with the push rod 49 of the second hydraulic presses on the second hydraulic presses 50 and are moved close to each other, through the arc-shaped knife edge and the extrusion shearing, the situation that burrs are not generated on the knife edge when the shearing is finished is effectively realized.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. The utility model provides a precision multi-angle multidiameter does not have burr pipe cutting machine which characterized in that: comprises a box body (11) and a motor main shaft (26) which is arranged on the box body (11) and is connected in a rotating manner, wherein a rotating shaft (34) is stirred by fixedly connected with the motor main shaft (26), a large rotating disc (14) is fixedly connected with the rotating shaft (34) in a stirring manner, protective sliding mechanisms for preventing the deviation of the device are arranged on two sides of the large rotating disc (14), a positioning device for preventing the deviation of a steel pipe during shearing is also arranged on the large rotating disc (14), a shearing cavity (12) is arranged in the box body (11), a transmission element (27) which is fixedly connected with the box body (11) and is arranged in the shearing cavity (12) is arranged on the box body, an accurate device for adjusting and controlling the accurate shearing of the steel pipe by the device is arranged on the transmission element (27), a motor cavity (23) is arranged in the box body (11), and a rotating device for adjusting and controlling the accurate angle by, fixed connection is related to on box (11) stir two cutter shell (60) that pivot (34) both sides distribute, be equipped with the accurate annular shearing mechanism who cuts the steel pipe in cutter shell (60), annular shearing mechanism include with hydraulic pressure chamber (47) that are equipped with in cutter shell (60) be equipped with in hydraulic pressure chamber (47) and be used for controlling means to realize the control mechanism of the equal accurate processing in both sides shearing the steel pipe, fixedly connected with second hydraulic press (50) on hydraulic pressure chamber (47) inner wall, fixedly connected with second pressure sensitive component (57) on second hydraulic press (50), sliding connection has driven push rod (58) of pressing on cutter shell (60).

2. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 1, wherein: the movable positioning device is characterized in that a driving hydraulic transmission shaft (62) is slidably connected to the upper surface of the large turntable (14), an arc-shaped tray (43) is fixedly connected to the driving hydraulic transmission shaft (62), clamping push pins (37) are arranged on two sides of the driving hydraulic transmission shaft (62), the clamping push pins (37) are slidably connected with the large turntable (14), and four positioning blocks (16) are symmetrically distributed on the center of the driving hydraulic transmission shaft (62) in the fixed connection mode on the large turntable (14).

3. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 2, wherein: sliding connection has the tight slide bar (18) of clamp on locating piece (16), fixedly connected with annular splint (15) on the tight slide bar (18) of clamp, the first hydraulic press (17) of fixedly connected with is gone up in locating piece (16), the first pressure-sensitive element (42) of fixedly connected with on first hydraulic press (17), be equipped with first hydraulic oil (40) in carousel (14), sliding connection has first hydraulic push pedal (38) on carousel (14), first hydraulic push pedal (38) with first hydraulic oil (40) contact is connected, first hydraulic push pedal (38) with press from both sides tight promotion (37) fixed connection, press from both sides tight promotion (37) can with first pressure-sensitive element (42) contact is connected, fixedly connected with initiative hydraulic pressure ring dish (45) on initiative hydraulic transmission shaft (62), initiative hydraulic ring dish (45) with first hydraulic oil (40) contact is connected, a second spring (44) is arranged between the arc-shaped tray (43) and the large rotating disc (14), and the driving hydraulic transmission shaft (62) is fixedly connected with the driving hydraulic ring disc (45).

4. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 3, wherein: the precision device comprises a scale pressing block (20) fixedly connected with the transmission element (27), the scale pressing block (20) is fixedly connected with an infrared sensing element (21), the box body (11) is connected with a transmission element (27) in a sliding way, an actuating element (24) is connected on the transmission element (27) in a sliding way, a dial (22) is arranged on one side of the large turntable (14) close to the scale pressing block (20), a motor cavity (23) is arranged in the box body (11), a main motor (25) is fixedly connected on the inner wall of the motor cavity (23), the main motor (25) is rotationally connected with the motor spindle (26), the main motor (25) is fixedly connected with the actuating element (24), the received signal is transmitted to the actuator (24) by means of the induction between the dial (22) and the infrared sensor (21).

5. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 3, wherein: rotating device include with sliding connection's support slide bar (29) on box (11), the steady outer loop of fixedly connected with (13) is gone up in carousel (14), be equipped with buffering spout (28) in box (11), buffering spout (28) with support slide bar (29) sliding connection, fixedly connected with runner shell (31) is gone up in support slide bar (29), it is connected with runner round pin (32) to rotate on runner shell (31), fixedly connected with runner on runner round pin (32), the runner with steady outer loop (13) contact connection, runner shell (31) with be equipped with first spring (30) between box (11).

6. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 5, wherein: the annular shearing device comprises a brake push rod (55) sliding on the box body (11), a brake button (53) is fixedly connected to the brake push rod (55), a cutter groove (46) is formed in the cutter shell (60), a shearing knife (52) is connected to the cutter groove (46) in a sliding mode, and a third spring (54) is arranged between the brake button (53) and the box body (11).

7. The precise multi-angle multi-diameter burr-free pipe cutting machine of claim 4, wherein: the driven pressing push rod (58) can be in contact connection with the second pressure-sensitive element (57), the second hydraulic machine (50) is in contact connection with the second pressure-sensitive element (57), and a second hydraulic push rod (49) is connected to the second hydraulic machine (50) in a sliding mode.